A Review on Metasurface Beam Splitters

Beam splitters are widely used in various optical systems, but traditional beam bulky and heavy, which not conducive to the integrated utilization of devices. Metamaterials have attracted extensive attention as a kind miniature artificial materials, there been many works on design metasurface splitters. Using metasurfaces, multiple functions can be achieved. Meanwhile, advantages small size, easy integration, flexible beam-splitting performance, tunable functions. This review surveys current work provides classification introduction Metasurface expected play huge role interferometers, multiplexing, multi-beam communications, more.